Finding the Fourth Proportional to 3,870.39, 5,341.17 and 2,102.00

Step by Step Solution

1. Step 1: Write the proportion equation
   3,870.39 : 5,341.17 = 2,102.00 : x
2. Step 2: Convert to fraction form
   3,870.39/5,341.17 = 2,102.00/x
3. Step 3: Cross multiply
   3,870.39x = 5,341.17 × 2,102.00
4. Step 4: Simplify right side
   3,870.39x = 11,227,112.63
5. Step 5: Solve for x
   x = 11,227,112.63/3,870.39
6. Step 6: Final answer
   x = 2,900.77